External hot-blast burner



June 16; 19 25.

A; G. KAUFMAN EXTERNAL HOT BLAST BURNER Filed April 7, 1923' IN V EN TOR ATTORNEY Patented June 16, y

p 1,542,394 lPATENTQOFFICE.

i AnoLrH KAUrnAn, onNEw relax, N. Y.

Exrnn-NAnLHonBLAs'r BURNER.

Application filed April 7, 1923. Serial No. 630,531.

To all wlzomit may concern:

Be it known that L'ADOLPH citizen of the United States, and resident of New York, in the county of New Yorkand' State of New York, have invented certain new and useful Improvements in External Hot-Blast Burners, of which the following is a specification. I

Thisinvention relates to improvements in fuel o l gas generatorsandburners, and par-1 ticularly to such as areadaptedtouse low grade oils in an effective-manner. ()neof the objects of the invention is to provide a burner having a preheating charnher in which the fueloils are brought to a high temperature before. entering the combustion chamber and 'so arranged that all parts can be readily cleaned should occasion occur. v -Another purpose is to produce aburncr provided with air regulating shutters to control the combustion of the gasesso as to avoid] collection of carbon,prevent odor,

smoke "or flame issu ng from the furnace, and eliminate danger of fireby reasonfof enclosing thefiames entirely within the furnace.

erator orheating unitin such mann'er that the same can bereadily removedfronithe interior: without dismantling the housing or the furnace. i I

A further aimis in theprovision of means whereby the heat fromf an open fire boxor trough can be directedto both the expansion, primary and preheating chamber in starting operations an d afterwards closed from the latter chambers at will.

Another aim is to provide means for ejecting and burning any condensed fuel that may collectin the expansion chamber. These several objects are accomplished by the novel construction and combination of r partshere'after described and illustrated in the accompanying drawing, hereof, and in which y a I Figure 1 is a transverse sectional view of an. apparatus made in accordance with the forming part invention.

Figure 2 is a, side View thereof.

Figure 3 is a bottom plan view. of the same.

Figure 4 is a fragmentary top plan view of the main elements of the burner unit,

Still another object is to provide a burner housing that can beplaced in-the fuelopening ofa common furnace, receptive of a,gen-- hollowfcasing or housing 12,- the same being suited in cross section to the opening 11.

The inner or entering end of the casing is fully open, its edge being in a vertical plane parallel to the furnace wall.

The outerside walls of the casing extend downwardly from, the top to the lower front portion which is open to the atmosphere and also'along the sides as. at 13, these openings for the greater portion of its length extending rearward of the furnace wall, andopen at the bottom as at 13, exteriorly the furnace, this'opening being covered with gauze if preferred. w

Thus the entire outer end'of the casing is open except for shutters 14 and 15, respectively upper and lower, fixed on spindles 16 and 17 which extend through the side walls of the casing and are provided with operating handles 18 and 19 and have attached 7 rigid ratchet wheels 20 and 21, each. having shutters may be held in. adjustment to wholly or partially close the front of the casing. W a

' "The upper shutter. 14 has a forwardly extending flange 14, the same co-operating with an inwardly extending, curved flange 15. extending site right angle from the top,

axial portion of.theshutter.15,thus providing means for effectively controllingthe draft and preventing any possible passage of flame outwardly. y The open lower front ing. is covered at'its sides 24t,'held in position'by lugs 25 registering with similar lugs 26 integral with the sides ofthe casing, and held by a screw or pin 27 in'sueh manner. as to permit, their withdrawal, these plates completing the 'side walls --of the housing outside the furnace, and it may be noted that the interior of the casing may the likeifdesired,

Disposed between said plates 24 is a burner device of integral construction comprised .of a tubular preheating chamber 28 communicating. at its center .by a hollow connection 29 with the expansion chamber portion of the cashy a pair of plates be lined with fire brick, clay orv and to the front, both chambers being open at each end, their full area and normally closed by suitable sheet packings 31 interposed between their ends andthe inner sur-.

the connections 87 provided with removable plugs'38, similar to the plug 39 in the chamber 28 registeringwith theconnection 29.

Between the chambers 28 and 30, over the primary chamber 36, are flaps or plate dampers 40 hinged at 41 at their outerends and provided with eyes 42 by which they may be raised in accordance with the draft desired. 7 p p Screws 48, passing through the plates 24 into connections 48 between the chambers at their ends maintain the burner members in assembled position, ensure their ends fit tightly against the packings 31, and constitute a complete generation or heating unit. 7 p

A plurality of perforations 44- are formed at spaced intervals in a row on theuppermost part of the expansion chamber 30 and extending into the chamber is a nipple l5. slanting rearwardly' at its outer'end so that when the fuel sprays through, it is ignited from the burner perforations and directs the flames inwardly of the furnace.

The nipple proyides means for e ecting any liquid fuel from the expansion chamber 30, such as may becaused by an excessof oil entering temporarily therein, by condensation or other reasons,raising the liquid and condensate which is received upon the damper platesAO, where it is ignited and consumed,-this construction avoiding issuance'of fuel, odor, smoke orflame from the furnace It is to be noted that the plugs 38 and 39 provide access to the Interior ofthe' tubes 28 and 36, and by reason of the bolted construction employed, as indicated at 27 and -13 the entire generator or heating unit can be detached for suchfpurposes as may be desired. 1

Having thus described myinvention and set forth the mannerof its construction, application and use, what I claim as new and desire to secure by Letters Patent, is

1. In combination with a furnace, an open ended casing disposed in the wall of said furnace, independently operable shutters at the front of said casing, means for maintaining said shutters in adjustment, a com bined oil gas generator and burner remov ably engaged in said casing, a wick carrying trough integral therewith, and dampers operable to control heat from said trough to said generator elements.

2. The combination with an oil fuel heating unit of a condensation nipple adapted to eject condensation fuel whereby said condensation is ignited and consumed.

3. The combination with an oil fuel heating unit of a condensation nippledirected inwardly of the furnace and adapted to eject condensation fuel whereby said condensation is ignited and consumed.

4. The combination with a furnace, a casing extending partially through the wall thereof, a frame removably engaged in the lower front part of said casing, a primary heating chamber, a secondary-heating chamber, an expansion chamberand an igniting trough, all of said elements being integrally combined, open at their ends andheld between the sides of said frame, connections between the several chambers, and supply means entering the primary heating cham-' ber.

5. A combined fuel oil gas generator and burner comprising a unitary structure having a tubular primary heating chamber into which oil is fed, a secondary heating'chamber communicating at spaced intervals with said primarychamber, an expansion chant ber having a single tubular connectionwith said secondary chamber, all of said chambers being arranged in spaced substantially parallel relation and open at their ends, an igniting trough formed alongside said expansion 1 chamber receptive of fuel therefrom, plates rigidly secured at the ends of said chambers, and gaskets interposed be tween said plates andchamberends.

6. A combined fuel oil gas generator and burner comprising a unitary structure having a tubular primary heating chamber into which oil is fed, a secondary heating cham. ber communicating atspaced intervals with said primary chamber, an expansion chamber having a single tubular connection with said secondary chamber, all of said chambers being arranged in spaced relation and open at their ends, plates removably engaged at the ends of said chambers, a condensation nipple extending through the wall of said expansion chamber, said chamber having perforations in its upper wall, means for igniting gases issuing fromsaid nipple and perforations, and means permitting access to the connections betweensaid chambers.

A combined fuel oil gas generator and burner, a unitary structure having a tubular primary heating chamber into which oil is fed, a secondary heating chamber communieating at spaced intervals with said primary between said secondary and expansion chambers,

removable plugs in the connections between said chambers, and an elongated wick carrying fire box disposed adjacentdischarge openings in said expansion chamber. i i r 8. A combined fuel oil gas generator and burner comprising a unitary structure having a plurality of preheating chambers, an expansion chamber containing perforations, said nipple extending nearly to its bottom a nipple in said expansion chamber,

and outward at a rearwardly inclined angle,

a Wick containing fuel trough adjacent said expansion chamber receptive of fuel from the perforations in said chamber in the initial stage of operation, means for controlling the heat delivered to said preheat- .lng chambers, removable closures at the ends of said chambers, tubular connections between said'chambers, and removable plugs in said connections permitting entry thereto.

Signed at New York, in the county of New York and State of New York, this 27th day of March A. D. 1923.

ADOLPH G. KAUFMAN. 

